/*
 * SonarQube
 * Copyright (C) 2009-2023 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.ce.task.projectanalysis.duplication;

import javax.annotation.CheckForNull;
import org.sonar.api.Startable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.ce.task.projectanalysis.analysis.AnalysisMetadataHolder;

import static com.google.common.base.Preconditions.checkState;

public class CrossProjectDuplicationStatusHolderImpl implements CrossProjectDuplicationStatusHolder, Startable {

  private static final Logger LOGGER = LoggerFactory.getLogger(CrossProjectDuplicationStatusHolderImpl.class);

  @CheckForNull
  private Boolean enabled;
  private final AnalysisMetadataHolder analysisMetadataHolder;

  public CrossProjectDuplicationStatusHolderImpl(AnalysisMetadataHolder analysisMetadataHolder) {
    this.analysisMetadataHolder = analysisMetadataHolder;
  }

  @Override
  public boolean isEnabled() {
    checkState(enabled != null, "Flag hasn't been initialized, the start() should have been called before.");
    return enabled;
  }

  @Override
  public void start() {
    boolean enabledInReport = analysisMetadataHolder.isCrossProjectDuplicationEnabled();
    boolean supportedByBranch = analysisMetadataHolder.getBranch().supportsCrossProjectCpd();
    if (enabledInReport && supportedByBranch) {
      LOGGER.debug("Cross project duplication is enabled");
      this.enabled = true;
    } else {
      if (!enabledInReport) {
        LOGGER.debug("Cross project duplication is disabled because it's disabled in the analysis report");
      } else {
        LOGGER.debug("Cross project duplication is disabled because of a branch is used");
      }
      this.enabled = false;
    }
  }

  @Override
  public void stop() {
    // nothing to do
  }
}
